Incinerator



April 1959 R. D. COREY 2,883,947

INCINERATOR Filed May 24, 1956 4 Q 14 I wK'fE/ INVENTOR. RONALD DAVIDCOREY BY 9 a mrouuev United States Patent INCINERATOR Ronald DavidCorey, McGraw, N.Y. Application May 24, 1956, Serial No. 587,109 3Claims. (Cl. 110-18) This invention relates to incinerators, and inparticular to a method and incinerator whereby the waste gases arepulled downwardly by a vacuum and out through a vent pipe.

In a conventional incinerator, the burning is started at the bottom ofthe refuse holding container and the gases flow upwardly through therefuse and out through the stack. In this conventional type ofincinerator, the entire contents of refuse is eventually burning, withthe result that the flame, smoke, and high temperature gases travelthrough a smoke pipe rapidly creating an overheated pipe between theincinerator and the chimney. This high rate of combustion at one timeproves to be a direct fire hazard. This type of incinerator lacks thenecessary means for controlling the flame, as well as disposing of theashes resulting 'from the burning.

It is an object of the present invention to provide an incinerator inwhich the waste gases and ashes are pulled down from the basin of therefuse container where the burning occurs by means of a vacuum and outthrough a vent.

Another object of my novel incinerator is to limit the burning action bylimiting the amount of incoming air in the combustion chamber.

Still another advantage of this type of incinerator is that a slowerrate of burning results because the flame is limited to the bottom partof the refuse .at one particular time. The supply of air entering asupply tube concentric with the vent tube, located at the bottom of therefuse container, passes up the side of the bottom portion of the refusecontainer, enters through the draft holes above the grate, and permitsburning only at this location. The waste gases and ashes are pulleddirectly down through the grate by the vacuum, and out through the vent.

This control of burning is also advantageous, inasmuch as the wastegases and smoke are blended with cool air admitted through the air holesin the basin portion below the grate, as they pass through the vent,thus preventing the vent from reaching excessively high temperatures.The vent tube temperature is kept to ,a point that is perfectly safewith respect to fire hazards.

Another advantage of this novel incinerator is the fact that the upperpart is sealed from any incoming draft. As is readily known, fire cannotbe supported without a suflicient amount of air .and oxygen. Myinvention limits the amount of air induced into the burning chamber, andhas no draft outlets, such as stacks, located at the top of aconventional type incinerator. This results in the entire burning beinglimited to the bottom of the refuse heap, whereby there is no danger offlames reaching the top, or upper area of the refuse container. As therefuse is being constantly burned, the weight of the unburned refuseconstantly settles the refuse down into the area of burningautomatically until all of the refuse is burned.

In accordance with the present invention, an incinerator is located inan enclosed chamber. The refuse is "ice placed in the incineratorthrough a connecting door and chute, and onto a grate located directlybelow the heating element, both of which are located in the lowerportion of the refuse container. A vacuum pipe is connected to thebottom of the incinerator. The opposite end of this pipe is connected toa vent. The air tube, which is parallel with the vacuum pipe, suppliesair .and oxygen into the incinerator. This air passage is confined tothe lower part of the incinerator at the grate area. Air holes arelocated directly above the grate to support combustion and also locatedbelow the grate, to cool the combustion gases.

When the heating element reaches the necessary temperature forcombustion, the refuse located on the top of the grate proceeds to burn.The waste gases and ashes, along with the smoke, which are the result ofthis burning, are pulled down directly into the vacuum pipe leading tothe vent. The flames of combustion are also drawn downward to the lowerbasin of the incinerator, where the cool air is admitted. As the burnedresidue is dnawn into the vacuum pipe, the unburned refuse constantlysettles down into the air of burning, to replace the burned waste. Inthis manner, the entire amount of refuse is burned, eliminating thedanger of too large a. fire, and completely and efficiently disposing ofall the gases without overheating the vent.

Further specific objects and advantages will become more apparent fromthe detailed description given below taken in connection with theaccompanying drawing which forms a part of this specification andillustrates merely by way of example a preferred embodiment of thepresent invention.

Reference is now made to the annexed drawing in which:

The figure is an elevated view in section illustrating the constructionand parts of the present invention.

With reference now to the drawing, an incinerator casing 1 is disposedas holding a refuse holding container 2. In the embodiment illustrated,both casing 1 and container 2 are substantially circular in crosssection. Located at the upper portion of the container 2 and casing 1 isan opening 10 and a movable chute 9, for receiving refuse to be burnedin the incinerator. 'At the lower portion of container 2 is aconventional grate 6, generally of the type illustrated as beingperfonated so that ashes and the like may pass therethrough into an areabelow. The grate area immediately above the grate is designated at 12,and substantially adjacent this area is a heating unit or other element7, for heating refuse to the combustion temperature. A series ofperforations or holes 14 is located above the grate area 12 through theside of the container 2 and tranasversely [around the circumferencethereof. Another series of holes 16 is located in like manner below thegrate 6. A chamber 11 is defined between the walls of the casing 1 andthe lower portion of the outer wall of the container 2. This chamber 11is in communication with the atmosphere by a pipe 4 having aconventional damper 23 therein, which damper 23 is adapted to be openedor closed for controlling draft through pipe 4. A vertical pipe 3 is incommunication with and extends downwardly from chamber 13 in container2. Chamber 13 is directly below thegrate 6, receiving ashes and smokefrom the perforations in the grate 6. A substantially horizontal pipe 8receives the lower end of pipe 3 and is connected to a sewer drain (notshown) at one end and is vented through a vacuum or exhaust pump 20 tothe atmosphere at the other end. Vent pipe 8 contains water 19 forflushing ashes into the sewer drain.

When the refuse is placed through the chute 9 on the grate 6 in therefuse holding container 2, the heating element 7 and damper 23 areturned on, so that when the necessary temperature is reached, the refusebegins to burn. As the burning takes place, the gases, as a result ofthis burning, are drawn directly down from the source through the vacuumpipe 3 and are emitted to the vent pipe 3. The weight of the unburnedrefuse settles it down in the area of automatic burning. Thus, thisdeposit of refuse is burned continuously, until the entire pipe isburned.

The limit of air entrance to the burning chambers 12 and 13 of thecontainer 2 by means of the draft holes 14 and 16 affords a safetymeans, inasmuch as flames are drawn downward through the grate intochamber 13 'by means of the vacuum, the flames and resulting heat areblended with incoming cool air admitted through draft holes 16, coolingthe smoke and gases 17, reducing danger from overheated pipes. The gasesand smoke 17 are drawn down through the vacuum pipe 3 to the vent 8 anddischarged safely by vacuum pump 20 to outside vent. The ash 18 dropsfrom the grates 6 downward through chamber 13 and continues downwardthrough vacuum pipe 3, lodging at bottom of vent pipe 8 which is alsoconnected to a sewer drain, at the opposite end from which the smoke andflue gases 17 are drawn out by vacuum pump 20. This sewer drainconnection permits the ashes 18 to be flushed away by water 19 to thedrainage system thus eliminating the need of emptying a dusty ash pan.

A service door 15 located at bottom of casing 1 permits access tocontrol chamber 21 in which are mounted controls, timing devices andswitches to control the electric heating element. Gas burners and gascontrols can also be utilized for a source of heat for burning.

It is to be understood, that while a preferred embodiment of theinvention has been shown and described herein, changes and modificationsmay be made in this invention without departing from the spirit andscope thereof.

' said second chamber into said first chamber above and below saidgrate, a pipe and damper opening into said second chamber for admittingair thereinto, a vertical second pipe extending downwardly from saidfirst chamber below said grate, a vent pipe receiving said second pipefor discharging smoke and carrying away ashes from said incinerator.

2. An incinerator according to claim 1, one end of said vent pipe havingvacuum means for causing to be drawn from the atmosphere through saidfirst pipe into said container through said intake holes, thence throughsaid second pipe into said vent pipe, whereby combustion is supportedand gases from said combustion are vented to the atmosphere.

3. An incinerator according to claim 1, one end of said vent pipe beingconnected to an outlet, said vent pipe having a horizontal portiontherein for receiving ashes from said first chamber and adopted to befiushed with water whereby said ashes are flushed into said outlet bysaid water.

References Cited in the file of this patent UNITED STATES PATENTS914,923 Cahoone Mar. 9, 1909 1,226,868 Dodd May 22, 1917 1,257,359Johnson Feb. 26, 1918 1,954,923 Eichhorn Apr. 17, 1934 2,010,460McKinley Aug. 6, 1935 2,598,067 O'Brien May 27, 1952

